Free MP3 to FLAC Converter
Convert MP3 to FLAC container format — useful for archiving or compatibility with FLAC-only players.
- Free
- No sign-up
- Stays on your device
Why use this converter
100% Private
All conversion happens in your browser. Your audio never touches our servers.
Fast Conversion
Powered by FFmpeg.wasm — convert files in seconds directly in the browser.
No File Uploads
Your files stay on your device. Zero privacy risk, zero data retention.
Instant Download
Converted file downloads immediately — no email, no waiting, no account.
No Limits
Convert unlimited files. No file size caps, no daily limits.
Works Everywhere
Any modern browser on Windows, Mac, Linux, iOS or Android.
Frequently asked questions
Yes — 100% free with no account required. Convert unlimited files directly in your browser.
No. All conversion happens locally in your browser using WebAssembly technology. Your audio never leaves your device.
Note: converting a lossy file to lossless does not recover lost quality — only the container changes.
Common uses: archiving, FLAC-only audio players, music libraries.
There is no enforced limit, but very large files (>500 MB) may be slow depending on your device memory.
Chrome, Firefox, Edge, and Safari (version 15.4+). WebAssembly support is required.
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